[jira] [Assigned] (CASSANDRA-15604) Remove obsolete table/MV options from schema tables

["Jordan West (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CASSANDRA-15604?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jordan West reassigned CASSANDRA-15604:
---------------------------------------

    Assignee: Jordan West

> Remove obsolete table/MV options from schema tables
> ---------------------------------------------------
>
>                 Key: CASSANDRA-15604
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-15604
>             Project: Cassandra
>          Issue Type: Improvement
>            Reporter: Olivier Michallat
>            Assignee: Jordan West
>            Priority: Normal
>
> CASSANDRA-13910 removed the {{read_repair_chance}} and {{dclocal_read_repair_chance}} options for tables and materialized views.
> CASSANDRA-12868 made {{default_time_to_live}} illegal for materialized views.
> However the corresponding columns still exist in {{system_schema.tables}} and {{system_schema.views}}. Maybe it would make sense to remove them in Cassandra 4. Historically, obsolete options have been removed in similar cases, for example {{compaction_strategy_class}}, {{compaction_strategy_options}} and {{compression_parameters}} were present in 2.2 but removed in 3.0 (arguably there was also a major refactoring of schema tables during that transition).
> This is not a huge deal, but it would make things a bit easier for the Java driver (our metadata exposes a "client-side describe" feature, and currently we assume that any column in the schema table must be added to the CREATE TABLE statement).



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